/*
* @file_name: file_descriptor.h
* @date: 2021/10/07
* @author: oaho
* Copyright @ hz oaho, All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef OAHO_FILE_DESCRIPTOR_H
#define OAHO_FILE_DESCRIPTOR_H
#ifdef __linux__
#include <fcntl.h>
class file_descriptor {
public:
	static int make_nonblocking(int fd);
};
/*
* https://man7.org/linux/man-pages/man2/fcntl.2.html
*/
int file_descriptor::make_nonblocking(int fd){
	int flag = fcntl(fd, F_GETFD);
	flag |= O_NONBLOCK;
	return fcntl(fd, F_SETFD, flag);
}
#endif
#endif